Daniel O Brien Books

Muslim Heroes on Screen

By Daniel O Brien

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Robert Altman

By Daniel O Brien

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Few careers in Hollywood can match the highs and lows of Robert Altman's. In the past several years, The Player, and Short Cuts especially have seen the director - who has been written off time and...

Manual of Travel Medicine

By Katherine Gibney, Tilman Ruff, Sarah McGuinness, Karin Leder, Joseph Torresi, Mike Starr, Daniel O Brien

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Manual of Travel Medicine

By Daniel O Brien, Tilman Ruff, Sarah McGuinness, Karin Leder, Joseph Torresi

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Sudoku Pocket Annual 2025

By Daniel O Brien, Braylink Publications

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Sensational Sayings on Love, Sex, Dating and Marriage

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.